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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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5
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6
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7 #ifndef _NGX_ATOMIC_H_INCLUDED_
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8 #define _NGX_ATOMIC_H_INCLUDED_
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9
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10
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11 #include <ngx_config.h>
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12 #include <ngx_core.h>
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13
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14
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96
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15 #if ( __i386__ || __i386 )
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0
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16
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110
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17 typedef int32_t ngx_atomic_int_t;
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18 typedef uint32_t ngx_atomic_uint_t;
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44
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19 typedef volatile ngx_atomic_uint_t ngx_atomic_t;
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110
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20 #define NGX_ATOMIC_T_LEN sizeof("-2147483648") - 1
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42
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21
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22
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110
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23 #if ( __SUNPRO_C )
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42
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24
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110
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25 #define NGX_HAVE_ATOMIC_OPS 1
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42
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26
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110
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27 ngx_atomic_uint_t
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28 ngx_atomic_cmp_set(ngx_atomic_t *lock, ngx_atomic_uint_t old,
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29 ngx_atomic_uint_t set);
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42
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30
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110
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31 ngx_atomic_int_t
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32 ngx_atomic_fetch_add(ngx_atomic_t *value, ngx_atomic_int_t add);
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42
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33
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110
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34 /* the code in src/os/unix/ngx_sunpro_x86.il */
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42
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35
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36
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110
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37 #else /* ( __GNUC__ || __INTEL_COMPILER ) */
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38
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39 #define NGX_HAVE_ATOMIC_OPS 1
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42
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40
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110
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41 #include "ngx_gcc_atomic_x86.h"
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42
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42
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110
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43 #endif
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42
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44
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45
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96
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46 #elif ( __amd64__ || __amd64 )
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42
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47
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110
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48 typedef int64_t ngx_atomic_int_t;
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49 typedef uint64_t ngx_atomic_uint_t;
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44
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50 typedef volatile ngx_atomic_uint_t ngx_atomic_t;
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110
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51 #define NGX_ATOMIC_T_LEN sizeof("-9223372036854775808") - 1
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0
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52
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53
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110
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54 #if ( __SUNPRO_C )
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55
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110
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56 #define NGX_HAVE_ATOMIC_OPS 1
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57
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110
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58 ngx_atomic_uint_t
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59 ngx_atomic_cmp_set(ngx_atomic_t *lock, ngx_atomic_uint_t old,
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60 ngx_atomic_uint_t set);
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61
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110
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62 ngx_atomic_int_t
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63 ngx_atomic_fetch_add(ngx_atomic_t *value, ngx_atomic_int_t add);
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64
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110
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65 /* the code in src/os/unix/ngx_sunpro_amd64.il */
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66
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67
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110
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68 #else /* ( __GNUC__ || __INTEL_COMPILER ) */
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69
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110
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70 #define NGX_HAVE_ATOMIC_OPS 1
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71
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110
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72 #include "ngx_gcc_atomic_amd64.h"
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73
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110
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74 #endif
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75
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76
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96
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77 #elif ( __sparc__ || __sparcv9 )
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78
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110
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79 #if (NGX_PTR_SIZE == 8)
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80
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81 typedef int64_t ngx_atomic_int_t;
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82 typedef uint64_t ngx_atomic_uint_t;
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83 #define NGX_ATOMIC_T_LEN sizeof("-9223372036854775808") - 1
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0
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84
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42
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85 #else
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110
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86
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87 typedef int32_t ngx_atomic_int_t;
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88 typedef uint32_t ngx_atomic_uint_t;
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89 #define NGX_ATOMIC_T_LEN sizeof("-2147483648") - 1
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90
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42
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91 #endif
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92
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93 typedef volatile ngx_atomic_uint_t ngx_atomic_t;
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94
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95
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110
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96 #if ( __SUNPRO_C )
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97
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110
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98 #define NGX_HAVE_ATOMIC_OPS 1
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99
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110
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100 #include "ngx_sunpro_atomic_sparc64.h"
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42
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101
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102
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110
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103 #else /* ( __GNUC__ || __INTEL_COMPILER ) */
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104
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105 #define NGX_HAVE_ATOMIC_OPS 1
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106
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110
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107 #include "ngx_gcc_atomic_sparc64.h"
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108
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110
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109 #endif
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42
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110
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111
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74
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112 #elif ( __ppc__ || __powerpc__ )
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42
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113
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114 #define NGX_HAVE_ATOMIC_OPS 1
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115
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116 #if (NGX_PTR_SIZE == 8)
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110
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117
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118 typedef int64_t ngx_atomic_int_t;
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119 typedef uint64_t ngx_atomic_uint_t;
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120 #define NGX_ATOMIC_T_LEN sizeof("-9223372036854775808") - 1
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121
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42
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122 #else
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110
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123
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124 typedef int32_t ngx_atomic_int_t;
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125 typedef uint32_t ngx_atomic_uint_t;
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126 #define NGX_ATOMIC_T_LEN sizeof("-2147483648") - 1
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127
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128 #endif
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129
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44
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130 typedef volatile ngx_atomic_uint_t ngx_atomic_t;
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42
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131
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132
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110
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133 #include "ngx_gcc_atomic_ppc.h"
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42
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134
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135
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110
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136 #endif
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42
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137
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138
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110
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139 #if !(NGX_HAVE_ATOMIC_OPS)
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0
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140
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141 #define NGX_HAVE_ATOMIC_OPS 0
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142
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110
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143 typedef int32_t ngx_atomic_int_t;
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144 typedef uint32_t ngx_atomic_uint_t;
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44
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145 typedef volatile ngx_atomic_uint_t ngx_atomic_t;
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110
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146 #define NGX_ATOMIC_T_LEN sizeof("-2147483648") - 1
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0
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147
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148
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44
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149 static ngx_inline ngx_atomic_uint_t
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150 ngx_atomic_cmp_set(ngx_atomic_t *lock, ngx_atomic_uint_t old,
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151 ngx_atomic_uint_t set)
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152 {
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110
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153 if (*lock == old {
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154 *lock = set;
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155 return 1;
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156 }
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157
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158 return 0;
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159 }
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160
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161
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162 static ngx_inline ngx_atomic_int_t
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163 ngx_atomic_fetch_add(ngx_atomic_t *value, ngx_atomic_int_t add)
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164 {
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165 ngx_atomic_int_t old;
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166
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167 old = *value;
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168 *value += add;
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169
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170 return old;
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0
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171 }
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172
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173 #endif
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174
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175
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176 void ngx_spinlock(ngx_atomic_t *lock, ngx_uint_t spin);
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177
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178 #define ngx_trylock(lock) (*(lock) == 0 && ngx_atomic_cmp_set(lock, 0, 1))
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179 #define ngx_unlock(lock) *(lock) = 0
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180
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181
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182 #endif /* _NGX_ATOMIC_H_INCLUDED_ */
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